PSYB51H3 Chapter Notes - Chapter 5: Retinal Ganglion Cell, Spectral Sensitivity, Color Vision
Document Summary
2 discrimination: we must be able to tell the difference between one wavelength and another. 3 appearance: we want to assign perceived color to lights and surfaces in the world. Moreover, we want those perceived colors to go with the object and not to change dramatically as the viewing conditions change. This has been covered before in chapter 2. We have 3 types of cone photoreceptors which differ in the photopigment they carry. They also differ in terms of sensitivity to light of different wavelengths. S-cones: a cone that is preferentially sensitive to short wavelengths; colloquially (but not entirely accurately) known as blue cones. M-cones: a cone that is preferentially sensitive to middle wavelengths; colloquially (but not entirely accurately) known as green cones. L-cones: a cone that is preferentially sensitive to long wavelengths; colloquially (but not entirely accurately) known as red cones. The spectral sensitivities of the 3 different types of cones overlap.
